2016年6月
Investigating thermal properties of and melting-induced structural changes in cold-drawn P(3HB) films with α- And β-structures using real-time X-ray measurements and high-speed DSC
Polymer
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- 巻
- 93
- 号
- 開始ページ
- 181
- 終了ページ
- 188
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.polymer.2016.04.028
© 2016 Elsevier Ltd. All rights reserved. In this study, we prepared two types of drawn films of poly[(R)-3-hydroxybutyrate], a microbial polyester: those containing only α-crystals and those containing both α- and β-crystals. Real-time wide-angle X-ray diffraction (WAXD) and real-time small-angle X-ray scattering (SAXS) measurements were performed during heating using synchrotron X-rays, along with high-speed differential scanning calorimetry (DSC), to measure the melting temperature of the β-crystals, which were present in a small amount. The changes induced in the highly ordered structure of the films were also observed. Based on the results of the real-time WAXD measurements, the melting temperature of the β-crystals was found to vary from 90 °C to 130 °C. The results of high-speed DSC supported these results. The real-time SAXS measurements allowed the changes in the highly order structure of the films to be observed. A model to explain the changes in the highly order structure is constructed based on the obtained results.
- リンク情報
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- DOI
- https://doi.org/10.1016/j.polymer.2016.04.028
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000375647900023&DestApp=WOS_CPL
- URL
- https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84964659740&origin=inward
- ID情報
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- DOI : 10.1016/j.polymer.2016.04.028
- ISSN : 0032-3861
- eISSN : 1873-2291
- SCOPUS ID : 84964659740
- Web of Science ID : WOS:000375647900023